I believe the answer is: Is fixated, or stuck in the oral stage of development
in the oral stage of development, infants consider their mouth as their primary active organs, which is why they constantly putting various objects to their mouth. If someone is stuck in this stage of development, their body tend to be tense and feel unrelaxed if they do not use their mouth to do something.
Nisha constantly chews on pencils and straws. according to Freud, Nisha is fixated, or stuck in the oral stage of development.
